diff --git a/composer.json b/composer.json
index dd2a5dd..c50188f 100644
--- a/composer.json
+++ b/composer.json
@@ -41,10 +41,5 @@
         "classmap": [
             "tests/AbstractTestCase.php"
         ]
-    },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "2.1-dev"
-        }
     }
 }